Depending on the contractor, it can cost anywhere from $2.50 to $10 per square foot to replace all trim in a house. This would include door and window trim, baseboard, crown molding, etc. One important factor that will affect the price is the type of trim used. For example, if you choose high-end trim like carved wood or marble, the cost will be higher than if you choose a more standard option like PVC or vinyl.

It can vary significantly depending on the type of trim, the quality of the trim, and the size and scope of the project. Generally speaking, you can expect to pay anywhere from $5 to $50 per square foot for replacement trim. So a 2,000 square foot home could cost between $10,000 and $100,000 to replace all trim.